diffus/edit/
collection.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
use crate::Same;

#[cfg_attr(feature = "serialize-impl", derive(serde::Serialize))]
#[derive(Debug, PartialEq, Eq)]
pub enum Edit<'a, T: ?Sized, Diff> {
    Copy(&'a T),
    Insert(&'a T),
    Remove(&'a T),
    Change(Diff),
}

impl<'a, T: Same + ?Sized, Diff> Edit<'a, T, Diff> {
    pub fn is_copy(&self) -> bool {
        if let Self::Copy(_) = self {
            true
        } else {
            false
        }
    }

    pub fn is_insert(&self) -> bool {
        if let Self::Insert(_) = self {
            true
        } else {
            false
        }
    }

    pub fn is_remove(&self) -> bool {
        if let Self::Remove(_) = self {
            true
        } else {
            false
        }
    }

    pub fn is_change(&self) -> bool {
        self.change().is_some()
    }

    pub fn copy(&self) -> Option<&T> {
        if let Self::Copy(value) = self {
            Some(value)
        } else {
            None
        }
    }

    pub fn insert(&self) -> Option<&T> {
        if let Self::Insert(value) = self {
            Some(value)
        } else {
            None
        }
    }

    pub fn remove(&self) -> Option<&T> {
        if let Self::Remove(value) = self {
            Some(value)
        } else {
            None
        }
    }

    pub fn change(&self) -> Option<&Diff> {
        if let Self::Change(value) = self {
            Some(value)
        } else {
            None
        }
    }
}